Abstract
This paper describes the thermal modelling results for a thin film resistor array which can have applications in infrared scene projection. In this design, the array consists of two parallel rows of resistor elements. A central aluminium busbar which forms a common electrical connection for all resistor elements, also provides thermal isolation between the two rows through thermal connection to the array substrate. It is shown that the thickness of the aluminium busbar of the order of 2 μm is sufficient to provide good thermal isolation, thus allowing an increase in the pixel fill factor.
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